Letter-sheet.



PATENTED JUNE 6, 1905. c. s. SUNDGREN.

LETTER SHEET.

APPLICATION FILED NOV. 23,- 1904.

2 SHEETS-SHEET 1.

PATENTED JUNE 6, 1905.

0. s. SUN DGREN.

' LETTER SHEET.

v APPLICATION FILED NOV. 23, 1904.

2 SHEETS-SHEET 2.

stamp stamp jag/ 227?- I UNITED STATES Patented. Jul e's, 1905.

PATENT OFFICE.

GATHARINE S. SUNDGREN, OF NEW YORK, N. Y., ASSIGNOR TO PHILIP A.

CONNE, OF NEW YORK, N. Y.

LETTER-SHEET.

SPECIFICATION forming part of Letters Patent No. 791,731, dated June 6,1905. Application filed November 28, 1904- Serial No. 233852.

To all whom it may concern:

Be it known that I, CATHARINE S. SUND- GREN, a citizen of the UnitedStates, and a resident of the borough of Brooklyn, in the city and Stateof'New York, have invented a new and useful Improvement inLetter-Sheets, of which the following is a specification.

The object of my invention is to provide a letter-sheet in which acommunicationsuch, for instance, as an invoice or bill-may be sentsealed and stamped from one party to a second party, from the secondparty back to the first party after the letter-sheet has been opened andexamined, and finally from the first party back to the second'partyafter the letter-sheet has been again opened and examined.

A further object is to provide a letter-sheet of the above character inwhich inclosures may be safely carried without danger of beingunintentionally removed therefrom.

In the accompanying drawings, Figure 1 represents a front face view ofthe letter-sheet unfolded. Fig. 2 is a back face view of the same. Figs.3, 4, and 5 are respectively front face, back face, and cross-sectionalviews of the letter-sheet when folded for its first transmission. Figs.6, 7, and 8 are similar views of the letter-sheet when folded for itssecond transmission with a separate inclosure therein. Figs. 9, 10, and11 are similar views of the letter-sheet when fold ed for its thirdtransmission, and Fig. 12 is a front face viewof the letter-sheetunfolded as it appears after all of its securing-flaps have beenremoved.

The letter-sheet comprises a'plurality of folding sections. In thepresent instance four of such folding sections are shown, (denoted,

respectively, by 1, 2, 3, and 4:.) Three of thesefolding sections havegummed side flaps for purpose of sealing the letter-sheet in its foldedarrangement. In the present instance the two end sections 1 and 4 andthe intermediate section 2 are provided, respectively, with side flaps5, 6, and 7. The back faces of the side flaps 5 of the section 1 aregummed, and the front faces of the side flaps 6 and 7 are gummed. Thefront face of the end section 1 is arranged to receive an address-as,for instance, the address of the second party, viz., the party to whichthe letter-sheet is intended to be first use in transmitting theletter-sheet to the second party after it has been returned to the firstparty. The three sections which are arranged to receive the addressesmay also be provided with postage-stamps where the letter-sheet isintended for use in transmittal through the mails.

The front faces of the letter-sheet other than upon the-section 1 arearranged to have a communication indorsed thereonas, for instance, aninvoice or bill. In the present instance the letter-sheet is shown asbeing arranged for the indorsement thereon of an itemized bill.

In practice'the letter-sheet is used as follows: The first party, orsender of the lettersheet, folds the sections together, as shown in Fig.5, with the side flaps 6 and 7 folded inwardly, leaving the front faceof the section 1 exposed, which front face is arranged to receive theaddress of the second party, to whom the letter-sheet is to betransmitted. The flaps 5 are folded back over the side edges of theseveral sections and secured tothe back of the folded letter-sheet.'When the second party receives the letter-sheet, he proceeds toopen'the same by cutting the flaps 5 from the section 1. This permitsthe letter-sheet to be unfolded. The second party may then fold a checkor other payment-voucher or communication within the letter-sheet,leaving the r back face of the section 2 exposed, the folds of thesections being as shown in Fig. 8. This back face of the section 2 isthe one which is arranged to receive the address of the first ,party.The side flaps 7 of the section 2 are then folded over the side edges ofthe sections and secured to the back of the folded lettersheet. When thefirst party receives the letter-sheet, he may proceed to cut the flaps 7from the section 2. This permits the lettersheet to be unfolded, and thefirst party may then remove the contents of the letter-sheet, and if itis a bill he may receipt the bill and again fold the letter-sheet, asshown in Fig. 11, leaving the back face of the section 4 eX- posed,which back face is arranged to receive the address of the second party.The flaps 6 may then be folded over the side edges of the sections andsecured to the back of the folded letter-sheet. The second party uponreceipt of the letter-sheet may open the same by cutting the fiaps 6from their section 4. The letter-sheet will then have the appearanceshown in Fig. 12 and may be filed away by the second party for futurereference.

It is to be understood that I do not wish to limit myself to the numberof folding sections herein shown, as it is obvious that a greater orlesser number of folding sections may be employed, the gist of theinvention lying in the provision of side flaps upon those three of thefolding sections a face of each one of which can be brought into anexposed position when the letter-sheet is folded without exposing thecontents of the letter-sheet.

What I claim is l. A letter-sheet having a plurality of foldingsections, three of the sections having gummed side flaps and arranged toreceive addresses.

2. A letter-sheet having a plurality of folding sections, three of thesections having gummed side flaps, certain faces of said three sectionsbeing arranged to receive addresses and stamps thereon.

3. A letter-sheet having a plurality of folding sections, three of thesections having gummed side flaps, one of the said sections beingarranged to receive an address on its front face and the other twosections being arranged to receive addresses on their back faces.

4. A letter-sheet having a plurality of folding sections, the two endsections and an intermediate section adjacent to one end section havinggummed side flaps, the said three sections being arranged to receiveaddresses thereon.

5. A letter-sheet having a plurality of folding sections, anintermediate section and one end section having side flaps gummed ontheir front faces and the other section having side flaps gummed ontheir back faces, the said first-named two sections being arranged toreceive addresses on their back faces and the last-named section beingarranged to receive an address on its front face.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two Witnesses, this 18th day of November, 1904i.

GATHARINE S. SUNDG HEN.

Witnesses:

FREDK. HAYNES, HENRY THIEME.

